Carton erecting machine



1952 J. o. ROHDIN 2,619,882

CARTON ERECTING MACHINE Filed Aug. 51, 1950 2 SHEET$SHEET 1 ,LIINVENTOR.

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Dec. 2, 1952 J. o. ROHDIN 2,619,882

CARTON ERECTING MACHINE Filed Aug. 31, 1950 2 SHEETS-SHEET 2 Tguz 21 :wL lr 1N VEN TOR.

Patented Dec. 2, 1952 r r CARTON ERECTING DIACHINE James Oscar Rohdin,Staket, Sweden, assignor to Esselte forpackning ab, Norrkoping, Sweden,

a corporation of Sweden Application August 31, 1950, Serial No. 182,542In Sweden January 26, 1948 2 Claims.

This invention relates to machines for packeting commodities incollapsible rectangular cartons made from cardboard, stiff paper, or thelike, the cartons being of the kind having foldable flaps at one or eachend, and particularly cartons of the kind described in United StatesPatent No. 2,427,858. The cartons are usually stored in a flat orcollapsed condition, and it is necessary to extend them to therectangular form prior to the packeting operations.

The object of the present invention is to enable the feeding of thecartons to a carton-carrier, and the subsequent extending of thecartons, to be efiected automatically in a, convenient manner.

The invention comprises a machine having combined therewith, a cartoncarrier movable in a step-by-step manner and provided with rectangularrecesses for reception of the cartons, feeding means whereby the cartonsare fed individually from a magazine in the collapsed condition, so thateach carton is initially placed in an oblique position across a recessin the carrier, and an obstructor which when encountered by an edge ofthe carton during movement of the carrier causes the carton to beextended and pressed into the recess.

In the accompanying drawings:

Figure 1 is a perspective view of a carton of the kind above described,one end being shown closed and the other open. 7 Figure 2 is a planillustrating a portion of a packeting machine embodying the invention,the machine being of the kind in which a rotary carton carrier isemployed.

Figure 3 is a side elevation illustrating the application of theinvention to a machine in which the carton carrier is arranged to movewith a linear motion.

Figure 4 is a section of a portion of the carton feeding mechanism in aplane parallel to the direction of feed.

Figure 5 is a section of the means for extending the flaps at the endsof the carton.

Figures 6 and '7 are respectively plan and side elevation illustratingdiagrammatically the action of the flap-extending means.

Figure 8 is a section on the line 8-8 Figure 2.

Figure 9 is a perspective view illustrating the action of acarton-opening knife.

Referring to Figure 1, the carton there shown comprises a rectangularbody part a made from cardboard or stiff paper, and having at each end aflap b which can be turned down to a position at right angles to thebody part as shown.

The other end flaps as c, d are united at their corner edges and areadapted to be folded down over the body part, prior to the folding overthem of the flaps b in the packeting operation. Also the body part isprovided with a thin paper lining e which at the position shown may haveformed. therein a notch ,f for the purpose hereinafter mentioned.Cartons of the kind shown in Figure l are usually supplied and stored ina flattened or collapsed condition.

As already stated the purpose of the present invention is to feed thecartons to a carrier and subsequently extend the cartons prior to thefilling and subsequent closing of the ends of the cartons.

Referring to Figure 2, this shows a portion of a packeting machine ofthe kind in which a rotary carton carrier 9 is employed, this beingoperable in a step-by-step manner by any convenient means. In theperiphery of the carrier are formed rectangular recesses h for thereception of the cartons. Adjacent to the carrier is mounted a magazine2 for the reception of a stack of collapsed cartons a against whichpresses a weight or spring loaded pusher a. Adjacent to the forward endof the magazine is mounted a slidable member it against which the stackof cartons is pressed by the pusher, and which is operable by anoscillatory toothed segment m engaging a rack n, the member is beingprovided with a feeder o by which the cartons can be individually andsuccessively fed from the magazine to an intermediate position betweenthe magazine 2' and the carrier 9. Also there is provided on theslidable member 7c and near its forward end, a spring loaded tooth 1)(Figure 4) for moving the carton from the said intermediate position tothe carrier.

On a bracket q situated between the magazine 2' and the rotary carrierg, and between which and a supporting surface r (Figure 4), there ispivotally mounted a catch s loaded by a spring t for preventingaccidental return movement of the carton. Also there are mounted on theupper and lower sides of the bracket q a pair of guide bars u (Figures 2and 5) which are adjustably attached to the bracket q by arms 1), and.on the forward end of each guide bar is pivotally mounted a finger w.The purpose of the guide bars u is to extend each of the flaps b of thecarton by turning it through a right angle while the carton is being fedfrom the magazine to the said intermediate position. During thismovement the fingers to pass behind the flaps b as shown in Figures 6and 7, and cause the flaps to be bent over, the flaps being then held inthis condition by the bars u as shown in Figures 1 and 5.

From the said intermediate position the carton is fed by the action ofthe tooth p (Figure 4) to the adjacent recess h in the rotary carrier sothat it lies obliquely across therecess as shown in Figure 2.. When in.this position the carton is temporarily held in by a spring loadedpresserfinger 2 pivotally attached at its end 3 to the part q, andarranged to exert a lateralpressure .on the carton for pressing ittowards the entrance of the adjacent guide arrangedat the periphery ofthe rotary carrier. The. guideconsists of. a fixed segmental member 4 ofhollow construction (Figure 8) on which are attached, segmental. plates5 which with the part 4' form narrow guide channels along which theflaps b can move when the carton is advanced to its other positions bythe carrier. mountedrabell crank lei/e16. one. arm, of; whicnis held'in;contact, with, an; adjnstable..sto l by asprin ;.-8;,. andonthe; otherarm lSi carriedqan ob-v structor :in. the form of .a. freelyrotatable-roller. e which preferably hasya. serrated orknurled peip fiyz. and-.which is, encounteredbythe fonward edge-.of. theearton after.ithasflbeenmovedby the rotarytcarrier fromitsyfirst. toitasecondposition; as shown. at, a!- in; Figure 2; During thenextmovement of the carrier,-.thecartonis-movedpast the. roller; andcisthereby caused to: assume its ,extended or opened; condition; also. it;isl-pressedrby the. roller. into.- its. recess in. the carrier as. shownata TOzBIlSdIZB thatthecarton.shairbepressed properly into the carrierrecess, a spring bladed? is; provided .in theguide. t as.. shcw.ninfligure. 2, and:.arrang.ed. tdexert pressurepn the. .cutenfa as of thecanton.

During the further movements. ofrthe. table. the flaps. at the. lowenendof .the. .cartcnrare.i folded over, the contents. are introduced, and.the flaps at theupper end are. folded .ovenbut; themeans foreffecting.theseoperatiohsformnorpartof the presentinyention.

It. will vbe .understoodlthat; during each rest ins terval of thetrotarycarrier, a..car.ton is fedlinto an empty recessin the.;carrier asz-abovedescribed.

To obviate .rislav oi'interierence with theproper opening. ofthe..cartonl under thesaction of. the roller.:9,; dueto. adherence of.the. continuous :;faces ofipthe vlining. .e,. it mayzbelsdesirable to;effect. a preliminary sep aration of" these-.f aces. by meansv of aknife. ilhis operationcmay. bet-performed either before the.=car.tonsare placed in. the magazine, or whenthe-cartons approachthe rollenfi;Further this operation may bepeffected by manualon auto.- maticactuation of i a. knife;. and. to... iaci1itatein.-. sertion of theknife, the projecting. end of the. 1m:- ing may beformed with a gap-;fasshown in Figures=l and 9; the;knife beingjndicatedlbyJ9 in Fi ured.

Also within; the guide it is pivotally Whilst in the foregoing theinvention has been described as applied to a machine having anintermittently rotatable carton carrier, it may be applied in anessentially similar manner to a machine having a carton carrier which ismoved along a rectilinear path. Such an application is illustrateddiagrammatically at Figure :3, which with theaid ofrthe abovedescription is self-explanatory.

What I claim is:

1. In a packeting machine the combination of a magazine for receiving apile of collapsed cartons,. acarton carrier movable in a step-by-stepmanner and. formed with rectangular recesses in itsperipheral edge'forthe reception of the cartons,..means for feeding the cartons, one byone, from the magazine to the recesses of the carrier, said meanscomprising a reciprocable slide member forming an end wall of themagazine against which the pile of cantons therein is pressed, meanspn,saidslide. member for .feedingthecarton in. contact :With'. said.slidelmembentrom the magazine; toyancintermediate pOSitiOIL between the.magazine and the carrier on each: operative stroke, of the. slidemember, otherameanspn said slide member: for simultaneously; feedinganother carton from saidintermediateiposition.to adiag= onal position ina recesslof; the carrier with; one end .portionof the: cartomprojectingcbeyond; the front edge of thecrecess; alstationaryiguidingqde-v vice: foe-the projecting portion ofzlt'he tcarton, a springcontrolled lever: pivotedto said guiding de-.- vice, andha rollerrotatably mounted; in saidz'lever for. proj eating-into: the pathofisaidzpontionaofi the carton, said roller being adapted to catch thepros. jecting end of the: cartoni and temporarily hold it against".movement with the carrier for extends ing --the'col1apsed cartonltoopen-it and cause it to fit intothe-recess. 7

2. In a packeting machineas claimed in'claim 1, the further.characteristic A feature that mea-ns are provided atthe saidintermediate position for endingflapsofi the-collapsed carton topositions at rightangles thereto said means-comprising guide-bars eachshaped to efiect bending of: a fiap and a pivoted finger at the endof'each su'ch' bar for engaging the flap andinitially bend it-into contactwith therespective-guidebare J AMES OSCAR ROHDIN-i REFERENCES ACITED. l

The following references are 0f? record "in the file ofthis patent:

UNITED STATES PATENTS Quigley et a1 May 1 1 ,11948.

